Home / Standards / GB 4700.1-84 GB 4700.1-84 Methods for chemical analysis of calcium-silicon alloy—The gravimetric method for determination of silicon content by dehydration with perchloric acid 硅钙合金化学分析方法 高氯酸脱水重量法测定硅量 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A